Improvement in railroad-car ventilators



UNITED STATES PATENT CEEIGE.

ANTHONY B. SWEETLAND, OF FITCHBURG, MASSACHUSETTS, ASSIGNOR T() HIMSELFAND JAMES DALEY, OF SAME PLACE.

IMPROVEMENT IN RAILROAD-CAR VENTILATORS.

Specication forming part of Letters Patent No. 116,774, dated July 4,1871.

To all whom 'it may concern:

Be it known that I, ANTHONY B. SWEETLAND, of Fitchburg, in the county ofWorcester and State of Massachusetts, have invented certain `new anduseful Improvements in the Mode of Adjusting Railroad-Gar and otherWindows; and I do hereby declare that the following is a full, clear,and exa-ct description thereof, reference being had to the accompanyingdrawing and to the letters of reference marked thereon which form a partof this specification.

The nature of my invention consists in the construction and arrangementof certain devices for adjusting and keeping in any desired position caror other windows, as will be hereinafter setV forth.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to describe itsconstruction and operation, referring to the annexed Figure l is a frontview of my improved-window. Fig. 2 is a plan view, showing the windowopen for ventilation; and Fig. 3 is a side view of the device forlocking the window.

A represents the frame of the car-window, to

. one side of which frame is hinged a second light frame, B. Inside ot'this frame B, on the nothinged or outer side, is hinged the window C.The outer edge of the .window C is looked to the inner or hinged side ofthe frame B in the following manner, whether the window is closed oropened to a certain angle: In the window-sash is made a recess, a, overwhich is placed a slotted plate, b. Through this slot is inserted theend of a device, D, for llocking the window. This device is made ofwire, the main part forming two parallel rods a suitable distance apart,at one end of which is formed a circle, d, with a curved dividing-wire,e, through said circle from the end of the lower of the two parallelrods. At the other end of this device D is formed a bow, f, upward, andthen the wires are connected together, as shown in Fig. 3. The circle dis passed through the slot in the plate b, and that part of the circlebelow the dividing-wire' e has inside of said plate a ring, l1., placedloosely on it, so that the entire device D is prevented from coming outof said plate, but still allowed to move up and down. It will also benoticed that that part of the plate b which is slotted is curvedslightly outward. The device I) is then passed over a headed screw, 7c,in the frame B, as shown. It will readily be seen that the windowG,being closed in the frame B, becomes securely locked by turning thedevice D downward, as one part of the circle d is held by the ring h.,while the screw k is inside of the same circle, but on the other side ofthe dividing-wire e, there being at the now upper end of said wire abend in which said screw drops, or rather which bend drops over saidscrew. llo open the window the device D must first be slightly raised toremove this bend from the screw k and then raised, when the window isopened, so far that the bow j' will drop or be pressed down on the screw7c when the window becomes securely locked at a certain angle. Inprecisely the same manner the outer edge of the frame B is fastened,either opened or closed, to the main frame A. By this means the windowmay be opened in whichever direction the car may move, so as to preventdust, smoke, dto., from entering the car, although free ventilation is,at the same time, secured. Both the frameB and window C may be thrownopen, in which case the window will stand out from and parallel with thecar.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is-

l. The device D formed of two parallel wires with circle d anddividing-wire e at one end and bow f 'at the other, in combination withthe slotted plate b, ring h, and screw 7c, all substantially as and forthe purposes herein set forth.

2. The combination of the window-frame A, auxiliary frame B, window C,device D, plate b, and screw k, all substantially as and for thepurposes herein set forth.

In testimony that I claim the foregoing as my own I aflix my signaturein presenceV of two witnesses.

ANTHONY B. SWEETLAND. Witnesses G. G. RUGGLEs, WILL W. STURTEVANT.

